Buggy code:
protected static final int K_LOCAL_INITIALIZER_DELIMITER = ( CompletionParser . COMPLETION_PARSER ) + 12 ; protected static final int K_ARRAY_INITIALIZER = ( CompletionParser . COMPLETION_PARSER ) + 13 ; protected static final int K_ARRAY_CREATION = ( CompletionParser . COMPLETION_PARSER ) + 14 ; protected static final int K_UNARY_OPERATOR = ( CompletionParser . COMPLETION_PARSER ) + 15 ; protected static final int K_BINARY_OPERATOR = ( CompletionParser . COMPLETION_PARSER ) + 16 ; protected static final int K_ASSISGNMENT_OPERATOR = ( CompletionParser . COMPLETION_PARSER ) + 17 ; protected static final int K_CONDITIONAL_OPERATOR = ( CompletionParser . COMPLETION_PARSER ) + 18 ; protected static final int K_BETWEEN_IF_AND_RIGHT_PAREN = ( CompletionParser . COMPLETION_PARSER ) + 19 ; protected static final int K_BETWEEN_WHILE_AND_RIGHT_PAREN = ( CompletionParser . COMPLETION_PARSER ) + 20 ; protected static final int K_BETWEEN_FOR_AND_RIGHT_PAREN = ( CompletionParser . COMPLETION_PARSER ) + 21 ; protected static final int K_BETWEEN_SWITCH_AND_RIGHT_PAREN = ( CompletionParser . COMPLETION_PARSER ) + 22 ; protected static final int K_BETWEEN_SYNCHRONIZED_AND_RIGHT_PAREN = ( CompletionParser . COMPLETION_PARSER ) + 23 ; protected static final int K_INSIDE_ASSERT_STATEMENT = ( CompletionParser . COMPLETION_PARSER ) + 24 ; protected static final int K_SWITCH_LABEL = ( CompletionParser . COMPLETION_PARSER ) + 25 ; protected static final int K_BETWEEN_CASE_AND_COLON = ( CompletionParser . COMPLETION_PARSER ) + 26 ; protected static final int K_BETWEEN_DEFAULT_AND_COLON = ( CompletionParser . COMPLETION_PARSER ) + 27 ; protected static final int K_BETWEEN_LEFT_AND_RIGHT_BRACKET = ( CompletionParser . COMPLETION_PARSER ) + 28 ; protected static final int K_EXTENDS_KEYWORD = ( CompletionParser . COMPLETION_PARSER ) + 29 ; protected static final int K_PARAMETERIZED_METHOD_INVOCATION = ( CompletionParser . COMPLETION_PARSER ) + 30 ; protected static final int K_PARAMETERIZED_ALLOCATION = ( CompletionParser . COMPLETION_PARSER ) + 31 ; protected static final int K_PARAMETERIZED_CAST = ( CompletionParser . COMPLETION_PARSER ) + 32 ; public int cursorLocation ; public ASTNode assistNodeParent ; static final int IF = 1 ; static final int TRY = 2 ; static final int CATCH = 3 ; static final int WHILE = 4 ; static final int SWITCH = 5 ; static final int FOR = 6 ; static final int DO = 7 ; static final int SYNCHRONIZED = 8 ; static final int DEFAULT = 1 ; static final int EXPLICIT_RECEIVER = 0 ; static final int NO_RECEIVER = - 1 ; static final int SUPER_RECEIVER = - 2 ; static final int NAME_RECEIVER = - 3 ; static final int ALLOCATION = - 4 ; static final int QUALIFIED_ALLOCATION = - 5 ; static final int QUESTION = 1 ; static final int COLON = 2 ; int invocationType ; int qualifier ; int lastModifiers = AccDefault ; int lastModifiersStart = - 1 ; int bracketDepth ; int canBeExplicitConstructor = CompletionParser . NO ; static final int NO = 0 ; static final int NEXTTOKEN = 1 ; static final int YES = 2 ; public CompletionParser ( ProblemReporter problemReporter ) { } public char [ ] assistIdentifier ( ) { } protected void attachOrphanCompletionNode ( ) { if ( ( assistNode ) == null ) return ; if ( this . isOrphanCompletionNode ) { ASTNode orphan = this . assistNode ; this . isOrphanCompletionNode = false ; if ( ( currentElement ) instanceof RecoveredUnit ) { if ( orphan instanceof ImportReference ) { currentElement . add ( ( ( ImportReference ) ( orphan ) ) , 0 ) ; } } if ( ( currentElement ) instanceof RecoveredType ) { RecoveredType recoveredType = ( ( RecoveredType ) ( currentElement ) ) ; if ( recoveredType . foundOpeningBrace ) { if ( orphan instanceof TypeReference ) { TypeReference fieldType ; int kind = topKnownElementKind ( CompletionParser . COMPLETION_OR_ASSIST_PARSER ) ; int info = topKnownElementInfo ( CompletionParser . COMPLETION_OR_ASSIST_PARSER ) ; <START_BUG> if ( ( kind == ( CompletionParser . K_BINARY_OPERATOR ) ) && ( info == ( OperatorIds . LESS ) ) ) { <END_BUG> if ( ( this . genericsLengthStack [ this . genericsLengthPtr ] ) > 0 ) { this . consumeTypeArguments ( ) ; } this . pushOnGenericsStack ( orphan ) ; this . consumeTypeArguments ( ) ; fieldType = getTypeReference ( 0 ) ; this . assistNodeParent = fieldType ; } else { fieldType = ( ( TypeReference ) ( orphan ) ) ; } CompletionOnFieldType fieldDeclaration = new CompletionOnFieldType ( fieldType , false ) ; if ( ( ( ( intPtr ) >= 2 ) && ( ( intStack [ ( ( intPtr ) - 1 ) ] ) == ( this . lastModifiersStart ) ) ) && ( ( intStack [ ( ( intPtr ) - 2 ) ] ) == ( this . lastModifiers ) ) ) { fieldDeclaration . modifiersSourceStart = intStack [ ( ( intPtr ) - 1 ) ] ; fieldDeclaration . modifiers = intStack [ ( ( intPtr ) - 2 ) ] ; } currentElement = currentElement . add ( fieldDeclaration , 0 ) ; return ; } } } if ( ( currentElement ) instanceof RecoveredMethod ) { RecoveredMethod recoveredMethod = ( ( RecoveredMethod ) ( currentElement ) ) ; if ( ! ( recoveredMethod . foundOpeningBrace ) ) { if ( orphan instanceof TypeReference ) { currentElement = currentElement . parent . add ( new CompletionOnFieldType ( ( ( TypeReference ) ( orphan ) ) , true ) , 0 ) ; return ; } } } if ( orphan instanceof Statement ) { RecoveredMethod method = currentElement . enclosingMethod ( ) ; if ( method != null ) { AbstractMethodDeclaration methodDecl = method . methodDeclaration ; if ( ( ( methodDecl . bodyStart ) == ( ( methodDecl . sourceEnd ) + 1 ) ) && ( ( scanner . getLineNumber ( orphan . sourceStart ) ) == ( scanner . getLineNumber ( methodDecl . sourceEnd ) ) ) ) { return ; } } currentElement = currentElement . add ( ( ( Statement ) ( orphan ) ) , 0 ) ; return ;

Fix:
if ( ( ( kind == ( CompletionParser . K_BINARY_OPERATOR ) ) && ( info == ( OperatorIds . LESS ) ) ) && ( ( this . identifierPtr ) > ( - 1 ) ) ) {